Słup [swup] is a village in the administrative district of Gmina Lelkowo, within Braniewo County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia. It lies approximately 26 kilometres (16 mi) east of Braniewo and 61 km (38 mi) north of the regional capital Olsztyn.